Bump LlamaIndex version. Remove context workaround.

Author: tcdent

agentstack/frameworks/templates/llamaindex/{{cookiecutter.project_metadata.project_slug}}/src/stack.py

@@ -10,11 +10,6 @@
 
 
 class {{ cookiecutter.project_metadata.class_name }}Stack:
-    def _format_history(self, history: list[ChatMessage]) -> str:
-        # ideally we would pass these directly to `chat_history`, but passing
-        # messages directly overrides the system prompt. this allows us to
-        # pass them as a string to `user_msg`.
-        return "\n\n".join([f"{msg.role}: {msg.content}" for msg in history])
 
     async def run(self, inputs: dict[str, str]):
         # TODO interpolate inputs into prompts
@@ -27,8 +22,7 @@ async def run(self, inputs: dict[str, str]):
             )
             history.append(task())
             handler = workflow.run(
-                user_msg=self._format_history(history), 
-                # chat_history=history, 
+                chat_history=history, 
             )
 
             async for event in handler.stream_events():

pyproject.toml

@@ -56,7 +56,7 @@ openai_swarm = [
     "agentstack-openai-swarm>=0.0.1"
 ]
 llamaindex = [
-    "llama-index-core>=0.12.15"
+    "llama-index-core>=0.12.16"
 ]
 
 [tool.setuptools.package-data]